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Article History

Received: 12 July 2020

Accepted: 28 October 2020

First Online: 4 November 2020

Ethics approval and consent to participate

: This study was approved by the Ethics Committee of West China Hospital, Sichuan University (ID: 2020–254). We provided an online written informed consent at the beginning of the online questionnaire. The survey started after the participants agreed to participate in this study and filled out the informed consents. All participants were informed that they had the right to withdraw from this study at any time.

: Not applicable.

: The authors declared no conflicts of interests.